jonzzer Posted January 5, 2011 Share Posted January 5, 2011 Hope you guys had a good new years, well my 82 280zx turbo that i swapped into my 77 280z is running rich. On her maiden voyage back from the emission center she bogged out and wouldn't rev, was backfiring on deceleration like none other. Ive tested the fuel pressure and it seems a constant 30ish psi, even under throttle. I was checking the timing and it seemed like its missing cause the light would jump speeds and not stay constant. but i think its timed right at 20 btdc(a red mark not the little stock arrow). I guess my question is what could be causing it to be so rich??? should i replace the rotor and cap? Oh yeah and Ive removed the AAC(thing with 4 hoses,2plugs). And rerouted the IAC to a intake manifold vacuum line. It idles at 1000rpm and i don;t know how to lower it... Does anyone have a picture of how the Coil and the little transistor with the blue and black wires hook up? Any Ideas would be great Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 7, 2011 Share Posted January 7, 2011 Check the cylinder head temp sensor. Quote Link to comment Share on other sites More sharing options...
jonzzer Posted January 9, 2011 Author Share Posted January 9, 2011 i tried to test it but i wasnt getting any Ohms from the 15 pin connector at the ecu like the fsm says. That was with neg battery connected and unconnected. I replaced O2 sensor, the ECU green light wasn't blinking with the new one... ill try again tomorrow its just to cold up here Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 9, 2011 Share Posted January 9, 2011 I would put money on the CHTS or it's wiring. Test at the sensor, then back probe the connector at the sensor, then check at the ECU. Quote Link to comment Share on other sites More sharing options...
jonzzer Posted January 9, 2011 Author Share Posted January 9, 2011 is the sensor the same for both turbo and non turbo 280zx? I found one on ebay but i don't know if it'll fit Quote Link to comment Share on other sites More sharing options...
jonzzer Posted January 31, 2011 Author Share Posted January 31, 2011 Alright I just replaced the cylinder head temp sensor with a temp sensor from Baxters, not 100% sure if it was the right one but it fit. My car still spouts out a black cloud when i rev it to 4k. What else should i check,the timing seems right. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted February 2, 2011 Share Posted February 2, 2011 Check the timing, check the wires for continuity from the sensor to the ECU. Quote Link to comment Share on other sites More sharing options...
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